Umbral methods and operator ordering

2011/12/07 by D. Babusci, Babusci, D., G. Dattoli +1
Engineering · Mathematics · Physics and Astronomy · #FOS: Physical sciences #Manufacturing Process and Optimization #Mathematical Physics (math-ph) #math-ph #math.MP

paper · pdf · doi:10.48550/arxiv.1112.1570

10 pages, no figures

arxiv created 2011/12/07 · openalex publication_date 2011/12/07 · arxiv updated 2011/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

By using methods of umbral nature, we discuss new rules concerning the operator ordering. We apply the technique of formal power series to take advantage from the wealth of properties of the exponential operators. The usefulness of the obtained results in quantum field theory is discussed.

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